ETC-974 Mini Temperature Controller Refrigerator Thermostat Regulator Thermoregulator Model: ETC-974 Temperature measurement range: NTC probe: -50°C to 110°C (-58°F to 230°F) PTC probe: -55°C to 140°C (-67°F to 284°F) Display resolution: 1°C / 0.1°C (switch mode between integer and decimal) Accuracy: NTC: ±0.5°C (-30°C to 50°C), ±1°C (other ranges) PTC: ±1°C (-30°C to 50°C), ±2°C (other ranges) Probe type: NTC (-50°C to 120°C); PTC (-50°C to 150°C) Power supply: 230VAC ±10%, 50/60Hz Rated current of relays (refrigeration, defrost, and fan): 8A/220VAC Operating temperature: -5°C to 55°C Relative humidity: 10%–90% RH (non-condensing) Storage temperature: -30°C to 85°C Input: 2 NTC sensors Color: Black + red Material: Plastic Size: 77 x 34.5 x 58mm Sensor length: 2m (including probe) Package Contents: 1 x Temperature Controller 1 x NTC Probe 1 x PTC Probe Note: Light and display differences may cause slight color variation between the image and actual item. Measurement error allowed is +/- 1-3cm.